2045390 has 16 divisors (see below), whose sum is σ = 3842208. Its totient is φ = 782496.

The previous prime is 2045377. The next prime is 2045437. The reversal of 2045390 is 935402.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4217 + ... + 4676.

It is an arithmetic number, because the mean of its divisors is an integer number (240138).

2^2045390 is an apocalyptic number.

2045390 is a deficient number, since it is larger than the sum of its proper divisors (1796818).

2045390 is a wasteful number, since it uses less digits than its factorization.

2045390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8923.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 2045390 is about 1430.1713184091. The cubic root of 2045390 is about 126.9381143917.

The spelling of 2045390 in words is "two million, forty-five thousand, three hundred ninety".